I have tried to look the sites in two differents houses, with differents routers, and in chrome, ie, firefox and opera (in where I didn't open the site before) and the result is the same.
The css sheet is not load.
I have tried to look another site of wordpress (in a personal server with the wordpress load and installed) and the result is ok. (http://tapasclam.concierta.org)
Blog url: http://lapetitallimera.wordpress.com/